ASTROSAT CZTI

Data Quality Report

Orbit 15553

Creation date: 2024-06-27T17:10:14.323446
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G08_030T01_9000002302_15553cztM0_level2.evt modeM0/AS1G08_030T01_9000002302_15553cztM0_level2_quad_clean.evt
Size (bytes)850,248,000173,494,080
Size810.9 MB 165.5 MB
Events in quadrant A5,905,1461,113,175
Events in quadrant B6,678,3781,120,697
Events in quadrant C6,082,6211,069,901
Events in quadrant D6,210,6211,060,190

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264434
B0284463
C0266163
D0276173

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12885690.535506%
B128852101.629802%
C128851691.311603%
D128851771.373690%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 14161 12888 2 2 0.01% 0.02%
B 14161 12888 78 78 0.55% 0.61%
C 14161 12886 1 1 0.01% 0.01%
D 14161 12888 106 106 0.75% 0.82%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 9 143 24669 75.29 1527 1494 307.8
A 0 226 13350 38.52 1527 1494 307.8
A 12 194 11300 31.86 1527 1494 307.8
B 3 64 371996 1256.1 1527 1488 295.0
B 4 48 189635 637.86 1527 1488 295.0
B 0 189 67416 223.51 1527 1488 295.0
C 14 238 233918 675.57 1470 1479 344.1
C 3 233 75674 215.64 1470 1479 344.1
C 0 207 13990 36.36 1470 1479 344.1
D 5 222 204881 514.02 1472 1438 395.8
D 15 0 103678 258.32 1472 1438 395.8
D 13 172 100998 251.55 1472 1438 395.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter